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El-Agha LZ, El-Abadelah MM, Kamal MR, Sabri SS, Al-As’ad RM, Voelter W. Fused thia-heterocycles via isothiocyanates. Part II. A convenient synthesis of some new thieno[2,3-b]thiopyran-4-one derivatives. ACTA ACUST UNITED AC 2018. [DOI: 10.1515/znb-2017-0183] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
A facile synthesis of some methyl 5-(arylamino)-4-oxothieno[2,3-b]thiopyran-6-carboxylates 6a–g is achieved via direct reaction of deprotonated methyl 3-(2,5-dichlorothien-3-yl)-3-oxopropanoate with aryl isothiocyanates in anhydrous tetrahydrofuran (THF) under reflux. Upon saponification of 6a,b, the ester group is eliminated, most logically via decarboxylation of the presumably-formed carboxyl group. Structures of the new compounds 6a–g and 7a,b are supported by microanalytical and spectral [NMR, MS electron impact (EI) and HRMS] data.
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Affiliation(s)
- Lana Z. El-Agha
- Chemistry Department, Faculty of Science , The University of Jordan , Amman 11942 , Jordan
| | - Mustafa M. El-Abadelah
- Chemistry Department, Faculty of Science , The University of Jordan , Amman 11942 , Jordan
| | - Marwan R. Kamal
- Chemistry Department, Faculty of Science , The University of Jordan , Amman 11942 , Jordan
| | - Salim S. Sabri
- Chemistry Department, Faculty of Science , The University of Jordan , Amman 11942 , Jordan
| | - Randa M. Al-As’ad
- Department of Chemistry, Faculty of Science , Al-Hussein Bin Talal University , Ma’an 71111 , Jordan
| | - Wolfgang Voelter
- Interfakultäres Institut für Biochemie , Universität Tübingen , Hoppe-Seyler Straße 4 , 72076 Tübingen , Germany
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Belen'kii L, Kruchkovskaya N. The Literature of Heterocyclic Chemistry, Part V. ADVANCES IN HETEROCYCLIC CHEMISTRY 1998. [DOI: 10.1016/s0065-2725(08)60834-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
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Asymmetric ketone reduction using chiral oxazaborolidines derived from aziridine carbinols. Tetrahedron Lett 1995. [DOI: 10.1016/0040-4039(94)02313-z] [Citation(s) in RCA: 27] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Five-Membered Ring Systems: Thiophenes & Se & Te Analogs. ACTA ACUST UNITED AC 1993. [DOI: 10.1016/b978-0-08-042074-5.50010-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
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